Affiliation: | 1. Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, , Groningen, The Netherlands;2. Department of Fixed and Removable Prosthodontics, Center for Dentistry and Oral Hygiene, Dental School, University Medical Center Groningen, University of Groningen, , Groningen, The Netherlands;3. Department of Periodontology, Center for Dentistry and Oral Hygiene, Dental School, University Medical Center Groningen, University of Groningen, , Groningen, The Netherlands |